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PDF CXA2094Q Data sheet ( Hoja de datos )
| Número de pieza | CXA2094Q | |
| Descripción | US Audio Multiplexing Decoder | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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US Audio Multiplexing Decoder
CXA2094Q
Description
The CXA2094Q is an IC designed as a decoder for
the Zenith TV Multi-channel System and also
corresponds with I2C BUS. Functions include stereo
demodulation, SAP (Separate Audio Program)
demodulation, dbx noise reduction. Various kinds of
filters are built in while adjustment and mode control
are all executed through I2C BUS.
48 pin QFP (Plastic)
Features
• Adjustment free of VCO and filter.
• Audio multiplexing decoder and dbx noise
reduction decoder are all included in a single chip.
Almost any sort of signal processing is possible
through this IC.
• All adjustments are possible through I2C BUS to
allow for automatic adjustment.
• Various built-in filter circuits greatly reduce external
parts.
• There are two systems for external inputs.
• There is an additional SAP output.
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCC 11
• Operating temperature Topr –20 to +75
• Storage temperature Tstg –65 to +150
• Allowable power dissipation
PD 0.6
V
°C
°C
W
Range of Operating Supply Voltage
9 ± 0.5
V
Standard I/O Level
• Input level
COMPIN (Pin 12) 100mVrms
245mVrms (Selected by INSW)
AUX1-L/R (Pins 42 and 41) 490mVrms
AUX2-L/R (Pins 45 and 44) 490mVrms
• Output level
TVOUT-L/R (Pins 47 and 46) 490mVrms
Pin Configuration (Top View)
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
∗ A license of the dbx-TV noise reduction system is
required for the use of this device.
36 35 34 33 32 31 30 29 28 27 26 25
VCAWGT 37
24 NOISETC
SOUT 38
23 STIN
ESAPIN 39
22 SUBOUT
TVOUT-S 40
21 NC
AUX1-R 41
20 VCC
AUX1-L 42
19 NC
NC 43
18 SAPTC
AUX2-R 44
17 GND
AUX2-L 45
16 NC
TVOUT-R 46
15 IREF
TVOUT-L 47
14 VGR
SDA 48
13 NC
1 2 3 4 5 6 7 8 9 10 11 12
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97725A86
1 page  
Pin
No.
Symbol
Pin
voltage
Equivalent circuit
CXA2094Q
Description
14 VGR
1.3V
11k
3k 147
9.7k 19.4k VCC
× 4 14
2.06k
Band gap reference output
pin.
(Connect a 10µF capacitor
11k 11k between this pin and GND.)
15 IREF
1.3V
VCC
40k
40k 30k
30k 15k
×2
30p 1.8k
6.3k
16k
VCC
15
147
30k
Set the filter and VCO
reference current. The
reference current is adjusted
with the BUS DATA based
on the current which flows to
this pin.
(Connect a 62kΩ (±1%)
resistor between this pin and
GND.)
16 NC
17 GND
—
—
18 SAPTC
4.5V
16
17
VCC
8k
3k
10k
1k
VCC
18
4k
↓ 50µ
—
Analog block GND.
Set the time constant for the
SAP carrier detection circuit.
(Connect a 4.7µF capacitor
between this pin and GND.)
19 NC
20 VCC
21 NC
—
—
—
19
20
21
–5–
—
Supply voltage pin.
—
5 Page 
CXA2094Q
– 11 –
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CXA2094Q.PDF ] | |
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